gios-asu/nectary

<?php

namespace Nectary;

/**
 * A request will validate based on a set of rules
 *
 * A request can also be used to take in options and
 * pull in the data required to fulfill a request.
 */
abstract class Request {
    public function validate( $error_callback ) {
        $rules = $this->validation_rules();

        $results = [];

        foreach ( $rules as $name => $check ) {
            if ( true !== $check ) {
                if ( \is_array( $error_callback ) ) {
                    $results[] = \call_user_func_array( $error_callback, [ $check, $this ] );
                } else {
                    $results[] = $error_callback( $check, $this );
                }
            }
        }

        if ( \count( $results ) > 0 ) {
            return $results;
        }
    }

    abstract public function validation_rules() : array;
}